To meet its zero-emissions goals, Los Angeles and Long Beach ports will start charging fossil fuel trucks an extra fee April 1 to pick up or drop off shipping containers. Most trucks at the port will be charged an extra $10 per 20-foot container—the standard measurement for a container—each time they enter or leave the terminals. Trucks that run on fossil fuels will be charged the extra “Clean Truck Fund Rate” fee. Trucks that run on clean energy, including natural gas, will be exempt for a limited time, according to the ports. Los Angeles Mayor Eric Garcetti and Long Beach Mayor Robert Garcia plan to mark the start of the new fee by joining port officials for a public kickoff event at the Long Beach port Friday. The fee is expected to generate $90 million each year for the ports. “As we continue to move record-breaking cargo volumes through our …